Preparing NBR rubber seal products with phosphite and phosphate additives
    1.
    发明授权
    Preparing NBR rubber seal products with phosphite and phosphate additives 失效
    用亚磷酸盐和磷酸盐添加剂制备NBR橡胶密封产品

    公开(公告)号:US6162847A

    公开(公告)日:2000-12-19

    申请号:US986470

    申请日:1997-12-08

    CPC分类号: C08K5/521 C08K5/527 C08L9/02

    摘要: A method for preparing a rubber seal product of a type which contacts a metal surface for sealing thereof, comprising the steps of: preparing a rubber composition comprising acrylonitrile butadiene rubber (NBR), (A) a carbocyclic phosphite compound represented by the general formula ##STR1## where R is an alkyl group having 8 to 24 carbon atoms, or a phenyl group having a mono-, di- or tri-substituted alkyl group having 1 to 10 carbon atoms, and (B) an acid phosphate compound represented by the general formula ##STR2## where R' is a hydrogen atom, or an alkyl group having 1 to 13 carbon atoms, and R" is an alkyl group having 1 to 13 carbon atoms, the phosphate compound having an acid number of about 150 to 800 KOH mg/g; wherein a total of about 5 to 20 parts by weight of compound (A) and compound (B) are present in the composition based on 100 parts by weight of NBR, vulcanizing the rubber composition to obtain a vulcanized rubber composition; and compressing the vulcanized rubber composition toward a metal surface.

    摘要翻译: 一种制备与金属表面接触密封的橡胶密封产品的方法,包括以下步骤:制备包含丙烯腈丁二烯橡胶(NBR),(A)由通式表示的碳环亚磷酸酯化合物的橡胶组合物,其中 R为碳原子数为8〜24的烷基或具有1〜10个碳原子的一取代,二取代或者三取代的烷基的苯基,(B)通式表示的酸式磷酸酯化合物,式中, R'为氢原子或碳原子数1〜13的烷基,R“为碳原子数1〜13的烷基,酸值为约150〜800KOHmg / g的磷酸化合物; 其中基于100重量份的NBR,在组合物中总共存在约5至20重量份的化合物(A)和化合物(B)),硫化橡胶组合物以获得硫化橡胶组合物; 并将硫化橡胶组合物压向金属表面。

    Acrylic rubber composition
    3.
    发明授权
    Acrylic rubber composition 失效
    丙烯酸橡胶组合物

    公开(公告)号:US5807913A

    公开(公告)日:1998-09-15

    申请号:US760864

    申请日:1996-12-05

    摘要: An active halogen-containing acrylic rubber composition for molding oil filter-gaskets, which comprises an active halogen-containing acrylic rubber and a metal phosphonate represented by the following general formula: RR'nPO(OH)(OM) wherein R is an alkyl group having 1 to 32 carbon atoms, a polyfluorocarbon group or a perfluoropolyether group; R' is an alkylene group having 1 to 6 carbon atoms, a phenylene group, an oxyphenylene group or a sulfonamide group; M is an alkali metal; and n is 0 or 1, gives oil filter-gaskets having a distinguished durable protection against fixation without lowering of high temperature sealability, even if used in engine oil.

    摘要翻译: 一种用于成型油过滤垫片的活性含卤素丙烯酸橡胶组合物,其包含由以下通式表示的含活性卤素的丙烯酸橡胶和金属膦酸盐:RR'nPO(OH)(OM)其中R是烷基 具有1至32个碳原子,多氟碳基团或全氟聚醚基团; R'是具有1至6个碳原子的亚烷基,亚苯基,氧亚苯基或磺酰胺基; M是碱金属; 并且n为0或1,即使在发动机机油中使用,也能得到具有突出的耐久性保护的油过滤垫圈,而不降低高温密封性。